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- W2097342095 abstract "A design study was conducted to investigate the effect shell buckling knockdown factor (SBKF), internal pressure and aluminum alloy material selection on the structural weight of stiffened cylindrical shells. Two structural optimization codes were used for the design study to determine the optimum minimum-weight design for a series of design cases, and included an in-house developed genetic algorithm (GA) code and PANDA2. Each design case specified a unique set of geometry, material, knockdown factor combinations and loads. The resulting designs were examined and compared to determine the effects of SBKF, internal pressure and material selection on the acreage design weight and controlling failure mode. This design study shows that use of less conservative SBKF values, including internal pressure, and proper selection of material alloy can result in significant weight savings for stiffened cylinders. In particular, buckling-critical cylinders with integrally machined stiffener construction can benefit from the use of thicker plate material that enables taller stiffeners, even when the stiffness, strength and density properties of these materials appear to be inferior." @default.
- W2097342095 created "2016-06-24" @default.
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- W2097342095 date "2010-04-12" @default.
- W2097342095 modified "2023-09-24" @default.
- W2097342095 title "Effects of Buckling-Knockdown Factor, Internal Pressure and Material on the Design of Stiffened Cylinders" @default.
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- W2097342095 doi "https://doi.org/10.2514/6.2010-2778" @default.
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